python: bug or feature?

[Sean Blakey]

On Wed, Aug 09, 2000 at 09:33:01PM +0000, Keith Murphy wrote:
> the first one works, but the second one always returns a 0.
> 
> ( (e%4 == 0) & (self.current == e-1) )
> 
> ( e%4 == 0 & self.current == e-1 )
> 
> is there some reason the ordering in python can't accept the second
> one?  thanks,
> 
> -->keith
> 
> 
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Note that this works (returning 1 when e is 4 and self.current is 3, for
example)

( e%4 ==0 and self.current == e-1)

The prinary difference is that & is a binary bit-wise operator which
binds more tightly than ==, while "and" is a boolean operator.
According to the Python language reference "The expression x and y first
evaluates x; if x is false, its value is returned; otherwise, y is
evaluated and the resulting value is returned."

-- 
Sean Blakey, sblakey at freei.com
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